Chemical process

Details Chemical process Chemical process

1980-12-31

1986-04-15

Gerstl, Robert

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

560122, C07C 6974

Patent

active

045829403

ABSTRACT:
There is described a method for synthesizing 3-nitro-1,2-cyclopentanedione salts which are substituted in the 4-position with an alkyl substituent and in the 5-position with an electron withdrawing substituent. The method comprises the addition and spontaneous cyclization reaction of a nitro olefin with a pyruvate anion. The salts can be converted to the nitro diones or used as intermediates in the preparation of amino reductones.

REFERENCES:
patent: 3690872 (1972-09-01), Gabrielsen
Ehrig et al, Chem. Ber., 108, 1961 (1975).
House, Modern Synthetic Reactions, pp. 595-615, 747-754 (1972).
Seebach et al, Angen Chemie Int. Ed., 13, 400 (1974).
Balick, et al, Pol. J. Chem., 53, 893, (1979) Abstract only.

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